diff options
| -rwxr-xr-x | configure | 22 | ||||
| -rw-r--r-- | qemu-timer.c | 4 |
2 files changed, 24 insertions, 2 deletions
@@ -2813,6 +2813,24 @@ if compile_prog "" "" ; then fi ########################################## +# check if we have usable SIGEV_THREAD_ID + +sigev_thread_id=no +cat > $TMPC << EOF +#include <signal.h> +int main(void) { + struct sigevent ev; + ev.sigev_notify = SIGEV_THREAD_ID; + ev._sigev_un._tid = 0; + asm volatile("" : : "g"(&ev)); + return 0; +} +EOF +if compile_prog "" "" ; then + sigev_thread_id=yes +fi + +########################################## # check if trace backend exists $python "$source_path/scripts/tracetool.py" "--backend=$trace_backend" --check-backend > /dev/null 2> /dev/null @@ -3159,6 +3177,7 @@ echo "preadv support $preadv" echo "fdatasync $fdatasync" echo "madvise $madvise" echo "posix_madvise $posix_madvise" +echo "sigev_thread_id $sigev_thread_id" echo "uuid support $uuid" echo "libcap-ng support $cap_ng" echo "vhost-net support $vhost_net" @@ -3443,6 +3462,9 @@ fi if test "$posix_madvise" = "yes" ; then echo "CONFIG_POSIX_MADVISE=y" >> $config_host_mak fi +if test "$sigev_thread_id" = "yes" ; then + echo "CONFIG_SIGEV_THREAD_ID=y" >> $config_host_mak +fi if test "$spice" = "yes" ; then echo "CONFIG_SPICE=y" >> $config_host_mak diff --git a/qemu-timer.c b/qemu-timer.c index 908a1030b6..ede84ffd56 100644 --- a/qemu-timer.c +++ b/qemu-timer.c @@ -494,12 +494,12 @@ static int dynticks_start_timer(struct qemu_alarm_timer *t) memset(&ev, 0, sizeof(ev)); ev.sigev_value.sival_int = 0; ev.sigev_notify = SIGEV_SIGNAL; -#ifdef SIGEV_THREAD_ID +#ifdef CONFIG_SIGEV_THREAD_ID if (qemu_signalfd_available()) { ev.sigev_notify = SIGEV_THREAD_ID; ev._sigev_un._tid = qemu_get_thread_id(); } -#endif /* SIGEV_THREAD_ID */ +#endif /* CONFIG_SIGEV_THREAD_ID */ ev.sigev_signo = SIGALRM; if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) { |